Fig. 2

Intruder-evoked EGR-1 expression in vasopressin 1b knockout (Avpr1b −⁄−) and wild type (Avpr1b +⁄+) male mice. a, b Representative photomicrographs of the ventral bed nucleus of the stria terminalis (BNSTV) in Avpr1b −⁄− (a) and Avpr1b +⁄+ (b) males. c, d Representative photomicrographs of the anterior hypothalamic area (AHA) in Avpr1b −⁄− (c) and Avpr1b +⁄+ (d) males. The arrows indicate examples of EGR-1 immunopositive neurons at ×100 magnification and the scale bar represents 100 µm